Tigawoods' 1995 Celica, Racing n Stuff Options

[Culpable04]

a side note, the Supra TT brake setup is WAY heavier than the ST205, the caliper share brake components and internals but the ST205 calipers are made out of alluminum, the supra TT caliper is cast iron, I almost cried when I picked mine up ( currently installing them on my lexus IS )

Each Supra TT caliper is almost 30 lbs after pads.

[richee3]

Although its advised not to be done. It was nessecary to split the calipers to remove all the seals so I could get them powder coated.

I have been digging around for some info on the size and material of the original o-rings. And I have found that they are dash -109 sized. An appropriate compound for a replacement ( since toyota doesnt have a P/N for them nor does any other resource I have looked into) which would hold up to the temperatures and be resistant to brake fluid is Viton ETP.

I have contacted a couple places on quotes for a square ring and hope to hear back. Im not sure if there is a minumum order, but if this all works out, it would be nice to have a place to grab these for people who want to rebuild their ST205 calipers and not re-use the halve seals

http://www.marcorubber.com/square_rings.htm

thank fate for bringing this to my attention. I should be posting my findings for future generations!!

Can Lithia order the caliper rebuild kit for the ST205 calipers? I think the kits are only like $25 per caliper for the GT calipers, and it would be great if they could order the kits for the ST205 calipers. The frozen clearcoat finish looks great, but I'd stick to a regular clearcoat so it can be buffed if it ever gets scratched.

[Culpable04]

the rebuilt kit doesnt include the o rings he's looking for, it's been a known issue with toyota 4 piston calipers, people have to source their o rings elsewhere as toyota does not provide them.

[Fate]

Although its advised not to be done. It was nessecary to split the calipers to remove all the seals so I could get them powder coated.

I have been digging around for some info on the size and material of the original o-rings. And I have found that they are dash -109 sized. An appropriate compound for a replacement ( since toyota doesnt have a P/N for them nor does any other resource I have looked into) which would hold up to the temperatures and be resistant to brake fluid is Viton ETP.

I have contacted a couple places on quotes for a square ring and hope to hear back. Im not sure if there is a minumum order, but if this all works out, it would be nice to have a place to grab these for people who want to rebuild their ST205 calipers and not re-use the halve seals

http://www.marcorubber.com/square_rings.htm

thank fate for bringing this to my attention. I should be posting my findings for future generations!!

No doubt, props for takin the initiative. I had a thread from the supra forums of someone else's trial and error with the o-rings, but have since lost it.

[Tigawoods]

Well I am not surprised by the response but since they dont stock that size and it would need to be custom cut,the minimum order would be $100 which would yield around 100 pieces

[mkernz22]

Well I am not surprised by the response but since they dont stock that size and it would need to be custom cut,the minimum order would be $100 which would yield around 100 pieces

But then you can sell them to people who need them, bump up the price, and make some money on top of it!

[Tigawoods]

Well I am not surprised by the response but since they dont stock that size and it would need to be custom cut,the minimum order would be $100 which would yield around 100 pieces

But then you can sell them to people who need them, bump up the price, and make some money on top of it!

Id need to find 12 buyers. I dont see me finding more than 4

[Tigawoods]

Here is an email I got back from a manufacturer in NJ

Thank you for your inquiry.
9 pcs - O-ring AS568-109 , #7265D Viton-ETP - $27.76 each
Delivery 2 weeks; Ex-works; We accept Visa, MasterCard, Amex.

You would be required to perform any cuts or modification to the o-ring as suggested in your inquiry.

I believe from the last part, he is saying that it would be a regular o-ring and if I wanted a stright cut ring, id need to cut it myself

This post has been edited by Tigawoods: Feb 5, 2013 - 11:10 AM

[Tigawoods]

Doing some more research I found out that people are using regular tubular o-rings instead of cross sectioned o-rings as replacements, (probably because they are cheaper and more readily available)

Tubular o-rings could work, and probably have, but they probably dont cover the surface area in the gasket channel as well as the cross sectioned rings do. And Id rather not take that risk.

here is another info thread
http://my.is/forums/f89/fyi-supra-bbk-brak...-orings-387452/

I can get quoted for cross sectioned gaskets, but I need the dimensions of the original ones, which are not with me. I had read measurements on a thread on another forum somewhere but I cant find it anymore


Also FYI:
99 Porsche Carerra Calipers can be modded to fit our cars


GAH! Update!!
Found it!!!
outside diameter: 12.50mm
inside diameter: 8.75mm
thickness: 1.95mm
source: http://www.alltrac.net/phpBB2/viewtopic.php?f=8&t=37350
I assume since these measurements where of a used gasket, that the thickness measurement should be increased slightly

These measurements given are actually proof of the wear from compression of the gasket. The numbers dont add up:
8.75 + 1.95 +1.95 = 12.65
All of this, assuming the gaskets where originally squared. With the above measurements, the thickness for the face part of the 0-ring would be 1.875

I dont think it really matters what that thickness is (for the most part). All it would be doing is changing the inner diameter which is already substantially larger than the fluid opening, and even after compression I can imagine it still would leave a large enough hole for the fluid to pass through.

This post has been edited by Tigawoods: Feb 6, 2013 - 2:32 PM

[Tigawoods]

dropped the car off at the fab shop on Monday for exhaust.
Unfortunately they wont be able to START until 2 weeks from now.

The calipers are also done the PC, and I will be able to pick them up next weekend, and reassemble them.

crack at the end of the tension pulley bolt hole.

[Tigawoods]

update on the caliper gaskets.
What a wonderful surprise when I purchased new seal kits for all four from Rock Auto, and found these!
They just came in the kits for the fronts, but I emailed Centric (the manufacturer of the kit) to see if they can send me 4 for for the rears
The repair kit is made by Centric and the part # for it is 143.44031 (this is 1 front caliper)

[playr158]

awesome news for you! good stuff, hopefully they'll sell ya the o-rings on their own

[808celica]

Still waiting your visit to Hawaii, oh the abundance of parts you can take home

[Tigawoods]

awesome news for you! good stuff, hopefully they'll sell ya the o-rings on their own

Havent gotten a response from them yet, might just re-use the old ones for the rear. Im also going to measure the old ones and compare them to the measurement of the new ones to see if there was a drastic change in size.

Still waiting your visit to Hawaii, oh the abundance of parts you can take home

I hate so much of you.

[Tigawoods]

o yes

[Ted95]

o yes

That looks baaddd, nice work bro!

[njccmd2002]

today i bought my jdm fenders!!








Oops, wrong thread maybe? Nah! just trolling this one.







Love how the calipers turned out.

[Tigawoods]

That looks baaddd, nice work bro!

thanks! I owe it to the Powder Coat shop, they cleaned the heck out of em

today i bought my jdm fenders!!




Oops, wrong thread maybe? Nah! just trolling this one.



Love how the calipers turned out.

[Tigawoods]

update on the seals for the ST205 calipers. after talking with centric and back with rock auto, Since these kits are rarely ordered, Centric didnt feel like looking into why the rear kits arent including the crossover seals. So they offered a solution.

Order the sets for the front which include the crossover seals, order the axle set for the rear, and then order 2 more sets of front seal packages and use their crossover seals for the rears and just have spare front cylinder/boot seals

[Fate]

hit me with those part #'s!